Backun Fatboy Clarinet Barrel Grenadilla
Backun Fatboy Clarinet Barrel Cocobolo
Backun Fatboy Clarinet Barrel Grenadilla with Packaging
Backun Fatboy Clarinet Barrel Cocobolo with Packaging

Backun Musical Services

Fatboy Barrels

Sale price$199 USD
Length (mm):62
Exotic Hardwood:Grenadilla

Versatility defined 

The Fatboy is at home in the world's most prestigious concert halls, famous jazz clubs, and everything in between. It's our best-selling barrel, and for good reason. Artists who are called upon to interpret a wide variety of music appreciate the Fatboy Barrel’s unique flexibility and versatility. Note: In Japan, this model is known as the Backun Barrel. 

Specs: Grenadilla or cocobolo wood. Compatible with Bb and A clarinets.


One barrel, one velvet bag, and one barrel tube

Meet the Backun Fatboy Barrel

Product Reviews

Customer Reviews
5.0 Based on 106 Reviews
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Greg A.
United States United States

My Fatboy

I am really enjoying playing on my new Backun barrel. It really opens up my clarinet and I have been anxious to play it every day since it arrived at my home! The colors I am hearing are just such an experience I cannot describe. Thank you for designing such a wonderful product!!!

Jeffrey B.
United States United States

Transformed my clarinet

I have an old Series 10 Selmer bought in the late 70's. It still is a good clarinet but stuffy and tight. Reeds and mouthpieces would not fix the problem. So I decided to try a new barrel, and the Backun Fatboy Standard was my choice. This barrel improved nearly every aspect of my clarinet; tone, flexibility, consistency when changing registers, expressiveness, easier leaps, and a dramatic reduction in stuffiness. I spent a couple hundred dollars on a Backun barrel and ended up buying a new clarinet. THANK YOU!!

Rodrigo S.

Backun Cocobolo Fatboy Barrel

I am pretty impressed with the quality of this mouthpiece. However, it does not sound as dark as I would have wanted it to, but I may still need to break it in some more. With additional upgrades, I can see my playing capacity improving much more.

Doug P.
United States United States

Backun Fatboy+ Cocobolo

I recently purchased a Backun Fatboy+ barrel in cocobolo to pair with my Buffet R13 clarinet and Vandoren 5JB mouthpiece. Wow! This barrel really opened up the sound and responsiveness of my horn. Being primarily a saxophonist, I'm used to more open mouthpieces and free blowing response. With the Backun Fatboy, switching from sax to clarinet is much more comfortable and natural feeling. The stuffiness is gone, and I feel like I have a setup that responds the way I'm used to having my saxes respond. I HIGHLY recommend checking out the Fatboy barrel if you're looking for a more open, responsive experience with your clarinet. Great work, Backun!

Finty W.

Fatboy barrel

The perfect barrel, highly recommended!

Trina L.
United States United States

Love it!

I ordered the Fatboy barrel and Vocalise mouth piece and love my new sound and how easy it is to play with the Legere synthetic reeds.